Home / 145,967,787.78-201,436,080.96-78,986,746.56

Finding the Fourth Proportional to 145,967,787.78, 201,436,080.96 and 78,986,746.56

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Solution

The fourth proportional to 145,967,787.78, 201,436,080.96 and 78,986,746.56 is: 109,001,999.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,967,787.78 : 201,436,080.96 = 78,986,746.56 : x
  2. Step 2: Convert to fraction form
    145,967,787.78/201,436,080.96 = 78,986,746.56/x
  3. Step 3: Cross multiply
    145,967,787.78x = 201,436,080.96 × 78,986,746.56
  4. Step 4: Simplify right side
    145,967,787.78x = 15,910,780,674,827,162
  5. Step 5: Solve for x
    x = 15,910,780,674,827,162/145,967,787.78
  6. Step 6: Final answer
    x = 109,001,999.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.